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  <title>俄罗斯方块</title>
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        <h4>俄罗斯方块</h4>
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          <span>分数</span>
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          <span>消除行</span>
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          <span>等级</span>
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          <span>下一个</span>
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        <span>操作</span>
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          <span class="up">变形</span>
          <span class="right">→</span>
          <span class="down">↓</span>
          <span class="left">←</span>
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